Wolves are leading the chase for the signature of Scotland forward James McFadden following his exit from Birmingham City.
The 28-year-old expects to be fit to look for a new club in four weeks' time after undergoing surgery on a knee injury in the United States.
And it is thought that he is a target for Mick McCarthy's in-form Premier League outfit, Wolves.
But Aston Villa are also interested and Celtic are monitoring his progress.
McFadden missed most of last season after suffering cruciate ligament damage last September.
Birmingham, who had suffered relegation from England's top flight, chose not to take up a two-year option on his contract.
After the club and player failed to negotiate a fresh contract, McFadden left Birmingham at the end of the season three years after arriving from Everton.
Birmingham manager Alex McLeish also departed St Andrew's and his appointment by Villa led to protests from a section of fans unhappy at the recruitment of a boss from their city rivals.
McFadden's switch could also be problematic for the same reason, but McLeish remains an admirer of the player who also played for him while he was Scotland manager.
The forward has already rejected overtures from former international manager Craig Brown, who now manages Scottish Premier League outfit Aberdeen.